Liquid meter



Feb; 28, 1928.

A. MONARD LIQUID METER Filed 001;- 7, 192.4

' 2 Sheets-5heet 1 fl/a/Vs and f/enf Feb. 28, 1928.

- 1,660, 23 A. MONARD LIQUID MET R I File d Oct. '2, 1924 2Sheets-Sheet? Mark 62/ 16764:

Patented Feb. 28, 1928 UNITED STATES V 1,660,623 PATENT OFFICE.

ALFRED MONARD, OF PARIS, FRANCE, ASSIGNOR T SOCIETE LASTER, OF PARIS,FRANCE, A CORPORATION.

LIQUID Marne.

Application filed October 7, 1924, Serial No. 742,247, and in FranceJune 26, 1924 The present invention relates to meters in which theamount of'liquid to be supplled is determined in advance.

element ofthe meter actuates a mechanism which determines the stoppingof the supply after a certain amount of liquid has been withdrawn, thisamount being preliminarily fixed by the operator by means of a pointer.0 moving upon a dial.

Such apparatus are known per se, but the present invention relates tothe device which determines the stopping of the supply at the properpoint. My improvedmechanism i5 comprises a spring-mounted slidecontrolling the supply cock or valve, said slide ending in a rollerwhich is movable transversely and is urged outwardly by a spring; saidroller makes contact with a cam which is actuated by the main drivingelement of the meter and has formed therein. a cutout part of suitableshape for the exit of the said roller. A suitable recess is also formedadjacent the said out out part, for the insertion of the end of thesaid'slide which has been uncovered by the displacement of the roller.

During the operation of the apparatus,

when the said cutout part coincides with the roller, the latter willescape, and the $0 said slide, under the action of its spring, will movetoa slight degree and will allow the said supply cock to'automaticallyclose. In the appended drawings which are given by way of example: IFig. 1 is a general view of a meter comprising my said improvements.Fig. 2 is an elevational view of the details of the slide controllingthe cock. 7

Fig. 3 is a sectional view of the said slide, with the apparatus-in theinoperative position, i. e. when the stopping device has been releasedand the flow of liquid arrested.

F i 4 is an analogous view, in which the positlon of the parts is suchthat the liquid' is in course of delivery.

The meter shown in Fig. 1 comprises a driving elementv contained in acasing '20 which is mounted on the conduit 21 for the flow of theliquid; said element" drives the gear wheel 1 which engages the gearwheel 2 either directly or bymeans of the pinion 3. The wheel 2 ismounted on a shaft 4 carrying at the top the worm coacting with the wormwheel 41 which is mounted on a sleeve In such meters, when the supplycock is opened, the driven,

9, said sleeve also carrying the radially toothed disk 8.

The shaft 10 extending through the sleeve 9 carries a cam 13 and. aradially toothed disk 12 which is maintained in engagement with disk 8by'the spring 16. ()n the disk 12 is mounted the pointer 14 showing theoutput of the meter, which moves upon the dial 15 On the rear check 18of the said casing is mounted an automatic release valve 19 whose disk28 (Figs. 3 and 4) is controlled by the .pring 29 and carries anoutwardly extending rod 22.

The arrangement and operation of a meter of this kind are well known andthe object of my invention is solely the automatic release oithe valve28 when the proper amount of liquid has been supplied.

The cam 13 comprises two concentric peripheral parts, 80 and 82. Thepart 80' is provided with a cut out portion 81 and the part 82 isprovided with a sector 83 having a recess 84.

The slidable member 61 can be moved horizontally, and it is maintainedby the supports 85; said member is urged outwardly by the springs 87which bear against the suitably disposed abutments 88.

One end of said slidable member is apertured at 89, and its other endterminates in a fork 66.

Thetapered orifice 89 serves for the insertion of. the valve stem 22 onwhich is a correspondingly tapered shoulder I);

The fork 66 which carries the stud 90 holds between its branches an axle64 upon which is mounted the slidable roller 65 which is urged againstthe cam 13 by the spring 67 and which has the tapered part 91 upon theface adjacent the said cam.

The operation is vas follows:

To start the apparatus, 'all that is neces sary is to press upon the rod22, after the pointer 14 has been brought upon the number showing theamount of liquid to be furnished. The slide 61 is thus released, andunder the action of the s rings 87' it will hold the rod 22in place ig.4). At the same time, the roller 65, urged by the spring 67, will slideon the axle 64, thus bearing against the periphery of the cam portion80.

The motion of the main driving element is imparted to the shafts 9 and10 by the 1 the zero figure, which also corresponds to the greatestamount to be supplied, the cam attains the position shown in Figs. 2 and3, i. e. the said roller now. coincides with the cut out part 81, andthe stud 90 of the fork 66 coincides with the recess 84. The saidaforementioned valve stem, one end of said slide. is now driven back bythe rod 22,'and the roller slides through the cut out 8lto the rear ofthe cam, whilst the stud 90 holds the said cam in place.

It will be noted thatva very slight rotation of the cam will besuflicient to set the apparatus, on the contrary to what prevails in theknown devices, and this offers a great advantage, since this willprovide for the supply of a very small fraction of the amountcorresponding to one revolution of the said cam,

Obviously, the said construction is susce tible'of variousmodificationsin detail, wlthout' departing from the spirit of the invention, forinstance the springs 87 instead of ushing the said slide, may suitablydraw it orward.

In a liquid meter, having a valve conpart trolled liquid inlet said"valve being'pro vided with a valve stem, means for auto maticallyclosing said valve after a predetermined quantity of liquid has passedthrough said meter, said means com rising a cam actuated by liquidpassing t rough said meter, said cam having'a recessed portion in oneface thereof, a slidably mounted barpositioned between said cam and thebar being forked, a spring pressed roller disposed in said forked end,'said roller engaging with said cam and adapted to be displaced into therecess thereof immediately prior to the closing of said valve, a studmounted on one of the forks of said forked end, a sector mounted on saidcam adjacent the recess therein, said sector having a cut out portionadapted-to engage with said stud, and. means on said bar remote fromsaid forked end to engage with said valve stem whereby said valve isheld in an open position when said roller rides on said cam and torelease said valve stem to close said valve when said roller engageswith the recessed port-ion of said cam and said stud engages in the cutout portion of said sector. In witness whereof I afiix my signature.ALFRED MONARD.

